Upstreaming Mimics Capillarity in Geothermal Heat Pipes
نویسنده
چکیده
The numerical technique called upstream differencing, applied to mobility terms in Darcy’s law for steam and liquid flow in the geothermal simulators TOUGH and MULKOM, is shown to lead to numerical boundary layers in the equations for steady vertical steam-liquid counterflow. These boundary layers are found to be very narrow, and to act in the same way as capillary boundary layers, providing reassurance that upstreaming acts to mimic the physical effect of capillarity.
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تاریخ انتشار 2003